nvm
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Hello Again, so i'm bringing back this Zumax PSU from the gutless thread and going to be doing some modifications, and also putting it into a PC i'm going to throw together out of spare parts to see how long it lasts.
So the first thing i did was fill in the missing filtering, by replacing the cheap common mode choke with a real one and adding a 470nf X2 capacitor in the open capacitor spot, i then replaced the fake Y-class capacitors with real ones, i also swapped out the mismatched primary caps with a pair of Aishi WK 470uf 200v caps, both of which test around 520uf. I also swapped... -
Hi,
Back after a long hiatus with some old power supplies that need repairing. I've recently picked up a couple of 386SX systems, two 486DX systems, a SiliconGraphics Indy and an iMac G3 that either have verified leaking capacitors in their power supplies, or are likely to in the near future. For the sake of simplicity, instead of tackling all at once, I'm starting with the 386's and one of the 486's.
The 386's power supplies are Seasonic SS4040A's, with caps that are visibly leaking, and 9 replacement caps per unit are required. Most appear to be from the Rubycon... -
hi
motherboard toshiba C50 PT10F
i found 2 bad 470uf tantalum in cpu sircuit making short .
but i only have 380uf tantalum can i replace them with electrolytic caps . -
Hi,
Got this junk brand ATX power supply board extracted from a dead power supply. There is only a label of SXJ2010 V1.4 from underneath the pcb. It only has 5v standby power.
I removed the original 5A glass fuse and soldered on a 60w incandescent bulb as current limiter. Upon power on to mains 230v ac, the bulb lighted brightly and then shuts off. By using a multimeter, i got about 100vdc on each of the main cap of 470uf, 200v. There is no other voltage on the secondary side apart from the 5vsb purple wire.
My question is it safe to take measurement of dc voltage from the... -
Hi. I found this psu a DEER DR-8460BTX and I know it's a very low end power supply but I want recap it, obviously without spending too much because probably the capacitor cost more than PSU 🤣. inside of the PSU Inside the power supply has them all Yang chun caps:
X2 200V 680uf
X3 50V 2.2 uf LE
X1 50V 22uf LE
X2 50V 1uf LE
X1 10V 1000uf LE
X1 50V 47uf LE
X1 50V 10uf LE
X2 10V 2200uf LE
X1 16V 2200uf
X1 16V 470uf LE
I had 2 questions about changing the capacitors though ... Does LE stand for low ERS?
Can...